So lord_valarian, I am very happy you got both Windows XP and openSUSE installed this way, but really, you can allow Windows XP to complete its entire installation before installing openSUSE. Also, be aware that installing Windows Service Packs seems to work best while the Windows XP partition is still set as active and may not work properly (installing windows services packs) after you install openSUSE if the Windows partition is no longer set as active. You have two installation options for the openSUSE Grub boot loader, one is to install grub into the MBR (which can allow the Windows partition to remain active) or to install grub into the openSUSE root / partition (which requires the / partition to be set active). None the less, I am happy you got your installation working just as you want.
